So Maurice would have 2N nickels  
Total number of coins is N + 2N + 9 = 3N + 9  
Each nickel is 5 pennies  
3N of nickels = 15N pennies  
-----------  
Their worth is 84 cents  
15N + 9 = 84  
15N = 75  
N = 75/15 = 5  
N = 5  
This means Nina has 5 nickels.
 
        
             
        
        
        
Answer:
Dan would be left over with $43 a week.
Step-by-step explanation:
 = 40%
 = 40%
 = 50%
 = 50%
Rent: $430 - 40% = $172
Food: $430 - 50% = $215
$215 + $172 = $387
$430 - $387 = $43
 
        
                    
             
        
        
        
Answer
$37
Explanation 
it costs $4.50 per sandwich so you multiply that by 6 which gets you $27. then you add the delivery fee ($10) to that and you get $37 
hope this helps!!
        
             
        
        
        
The half gallon is better because you could buy 2 half gallons of milk and get the same amount for $2.98 which is less than $2.99
        
                    
             
        
        
        
80=20x4=10x2x2x2=5x2x2x2x2
5x2x2x2x2